Preheat your oven to 350°F (175°C) and grease a 9x13 inch baking dish or line it with parchment paper.

In a large mixing bowl, cream together softened unsalted butter, brown sugar, and granulated sugar until light and fluffy (about 2-3 minutes).

Add the eggs one at a time, beating well after each addition, then mix in the vanilla extract.

In a separate bowl, whisk together all-purpose flour, baking soda, and salt, then gradually add this dry mixture to the wet ingredients, stirring until just combined.

Fold in the semi-sweet chocolate chips evenly throughout the dough.

Spread the cookie dough into the prepared baking dish, smoothing the top.

Bake for 25-30 minutes until golden brown around the edges and a toothpick inserted comes out clean.

Allow the bars to cool slightly, then drizzle warm salted caramel sauce over the top.

Cool completely before slicing into squares.